Originally Posted by aboobybobpleez
Whats a good compression ratio to run nitrous on the LS?
What size shot?
What type of system? Dry? Direct port?
What fuel grade? 91? 93? 110?
For a dry single port system and 91 octane, the stock CR of 9.2:1 is perfectly adequate.
If you're building a B18B specifically for nitrous and street gas, you could go up to 10.5:1 with relative safety... just watch out for detonation.